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新型深孔镗刀镗杆酒窝« oursolo.net

作者:企业资讯策划团队 来源:rwfb 发布时间:2010-03-13 浏览:116

圆柱和脸部处理相比,镗孔,容易失败。在加工过程中,刀片切割孔本身的优势,肉眼无法观察,因此,很难找出故障的不便操作的原因。

孔加工的主要故障及由加工表面和工具崩溃边缘破裂,等质量差造成的颤振芯片。其中,颤振是一个重要的原因之一。扑动因延长刀具长度和直径比植树节出现(午/晚)过大,缺乏刚性的工具。此外,镗刀位的不同,钻有两个领域{jd0}参加,是一个相对平衡的工具,而沉闷的刀是一种先进的切割,所谓的单点切削参与工具,因此在偏转和扭转性能的影响是明确的,很容易诱发颤振。

抑制颤振的产生在实际生产中,通常采取以下措施:尽可能短①延长刀具长度;②减少速度;②提高进给速度,从而使轴向切削力一边;③大量的使用前角前角刀片或刀片,以减少切削力;④?角减少,减少到1刀具渗透阻力;⑤削减小深加工,在切削倒角边,以减少宽度保持良好的性能获得晋级。

但这些措施受到切削条件,有时甚至会产生反效果,使xc颤振,已成为十分棘手的问题。诸如深孔加工工件的需要,镗扩展将无法缩短的长度,减少了切割速度会降低加工效率,加大前角,容易崩溃的边缘,减少角?,将允许恶化表面粗糙度等。特别是在深孔,盲孔加工,芯片难以处理排放孔,并继续削减到该工具可以方便地折叠或在叶片表面已被划破。芯片时堵塞严重程度,而且还可能导致刀具破损。特别是在小直径深孔加工,由于切割的刀具材料之间的差距在非常小的多,芯片更困难,失败的也比较多。深孔钻

的加工形式和风格,因此棘手的问题,制造商的用户工具急于推动gx率和高可靠性钻具问题。日本三菱材料公司,以满足用户的这种要求,最近开发出钢和硬质合金系统的整体植树节两种类型,其特点如下介绍和削减效果的振动性能酒窝镗杆。

1,压痕钢镗杆

1。特色

组成酒窝镗杆切削钢在外形设计工具,保持根据镗头的前提下,刚性好,以尽量减少重量的焦点,从而大大改进的阻尼减振性能。压痕钢镗杆的特点如下:

(1)在处理回镗头有深刻的窝,可以减少头部的重量。
(2)能抑制截面形状的变形工具,降低了光镗头的议论,对过去5倍同类产品的长度。
(3)有能力在两个方向上的芯片,芯片的性能。
(4)酒吧方有激光打印的规模,以便参照经营者的申请。
(5)进行了刀体镍基涂层材料处理,是银白色,黑色手柄与过去相比,防锈性能和使用寿命也大大增加。

(6)有一个刀片80 °,55 °和35 °钻石,80 °凸三角形,正方形,三角形和其他形状,可满足不同处理需求的需要。
(7)安阿伯φ8?25毫米,直径有6个为80 °菱形,三角形,使用凸三角刀片规格;φ10?20毫米四种规格为55 °金刚石刀片的使用。
(8)叶片使用11 °的前角,切削良好的清晰度,打破槽的压型,芯片性能良好的使用;此外,有一种突破性的芯片能够进一步提高加工表面精度。
(9)的硬质合金刀片材料,以及各种超高压烧结涂层刀片,已完成标准化。

2。切割效果

(1),以减少震动和防止变形

与酒窝植树节φ16mm与原来的下L的处理相同的条件镗杆镗杆/天= 5深孔的镗杆酒窝的影响振动消减提高21%。此外,作为对{dy}个配置{zj0}的状态使用的结果酒窝枯燥,轴向力和沿截面径向力的分布合理,比原镗杆,工具变形减少17%。

(2)打破影响

酒窝镗杆用中压型断屑槽的深沟球槽壁的芯片处理能力的多种其他两个新组合的断屑槽结构。芯片已被打破小卷曲的形状,光滑芯片的规则,也不会划伤加工孔的表面。

(3)加工的例子

在削减0.5毫米,进给速度0.1毫米/?深度,切削速度80m/min,延长刀具长度为L /天= 5根据加工SCM440材料,其他的条件公司容易镗杆闲聊,一表面处理大量的刮痕,以及凹陷镗杆能顺利处理,良好的表面质量。为了提高切割速度等处理后160m/min,长径比L / D = 4,其他镗杆的表面处理将留下明显的痕迹的波纹一样颤振,以及凹陷镗杆加工表面非常光滑,准确性仍然可以维持在一个十分优越的水平。

二酒窝硬质合金镗杆

1。特点

的3倍,比钢高,因此,硬质合金弹性模量,材料本身具有良好的抗颤振性能。三菱材料用于硬质合金硬质合金比一般具有较高的刚度,振动性能是一个很好的工具材料。这种头部的钢铁生产镗杆,干硬质合金的一个锥形使用的组合型组合型。这样,才能改善两国之间的结合强度。硬质合金作为一个刚性好,镗杆的结果,其突出钢材约1.6镗杆长度?2倍。

硬质合金镗杆酒窝的供应结构孔位置可以确保冷却剂前沿的直接流动,为深孔加工非常重要的功能。对内部流体出院扦插效果将会变得非常顺利,按可选的80 °金刚石刀片或刀片三角经济适用刀片。乔木φ8?20毫米,直径有一共有5个规格,其中两个短柄(相当于总长度的1 / 2,2 / 3)和三个标准长度,可以适当选择根据工件。

2。处理效果

在切割速度80m/min,切削深度0.5毫米,进给速度0.1毫米/?,延长的长度为L /天=根据加工SCM440(185HB),类似的镗杆加工其他公司的条件8具有明显的工件表面振纹,碳化物和酒窝的镗杆加工表面很光滑,与类似转变的痕迹。长径比L / D =钻孔8是一个非常困难的过程,硬质合金作为一个窝镗杆的结果具有良好的阻尼效应,因此在这样苛刻的条件,尽管切割精度高,稳定性。

New type of deep-hole boring tool boring bar Dimple

With cylindrical and face processing, compared to hole boring are prone to failure. In the processing process, the blade cutting edge in the hole itself, the naked eye can not observe, therefore difficult to identify the causes of failure that will inconvenience the operator.

hole processing are the main fault and Chip by the flutter caused by bad quality of machined surface and tool edge collapse, broken, etc.. Among them, the flutter is an important one of the reasons why. Flutter due to the emergence of extended tool length and diameter ratio Arbor (L / d) is too large, lack of tool rigidity. In addition, the boring bit different with the knife, drill has two cutting edge take part in cutting, is a relative balance of the tool, while the boring knife is a cutting edge take part in cutting, the so-called single-point cutting tool, so by the deflection and to reverse the effects of performance is clear, and easily-induced flutter.

flutter suppression for the generation, in the actual production usually take the following measures: ① extended tool length as short as possible; ② reduce speed; ② increasing feed rate, so that the cutting force to axial side; ③ the use of large anterior horn anterior horn blade or blades in order to reduce the cutting force; ④ Corner reduce R, to reduce the resistance to penetration of a cutting tool; ⑤ cut in small deep-processing, the reduced width of the cutting edge chamfering in order to maintain good performance of the cut.

but these measures are subject to cutting conditions, and sometimes even be counter-productive, so that the elimination of chatter has become very difficult problem. Workpieces such as the need for deep-hole processing, BORING extended will not be able to shorten the length; reduce the cutting speed will reduce the processing efficiency; increase the anterior horn, prone to collapsing edge; reduce Corner R, will allow the deterioration of surface roughness and so on. Particularly in the deep-hole, blind hole machining, the chip difficult to discharge from the processing hole and continue to cut into the tool can easily collapse or the blade surface has been scratched. Chip when the severity of the congestion, but also may lead to tool breakage. Particularly in the processing of small-diameter deep-hole, due to cutting tool materials with the gap between the more than very small, Chip even more difficult, failure will be more. deep-hole boring

the thorny problem of processing forms and styles, therefore, the user tool for manufacturers eager to drive the issue of high efficiency and high reliability of the boring tool. Japans such a demand, recently developed a vibration performance dimple boring bar, with steel and carbide system overall Arbor two types, the following introduction of its characteristics and the effect of cutting .

1, dimple steel boring bar

1. Features

integral dimple steel boring bar cutting tool in the design of the shape, the focus on maintaining good rigidity under the premise of boring head to minimize the weight, thus substantially improve the damping properties of vibration reduction. Dimple steel boring bars features are as follows:

(1) boring head in the back of the processing has deep fossa, can reduce the weight of the head.
(2) can inhibit the cross-section shape deformation tool, light boring head reduces chatter, extended length of similar products over the past 5 times.
(3) have capacity in both directions chip, Chip performance.
(4) Bar side has laser printing scale, to facilitate reference to the application of the operator.
(5) carried out a knife body Ni-based coating material treatment, was silver-white, with black handle compared to the past, anti-rust performance and service life are greatly enhanced.

(6) has a blade 80 °, 55 ° and 35 ° diamond, 80 ° convex triangle, square, triangular and other shapes, can meet the needs of different processing needs.
(7) Arbor φ8 ~ 25mm in diameter has six specifications for the 80 ° diamond, triangular, convex triangular blade using; φ10 ~ 20mm four specifications for the use of 55 ° diamond blade.
(8) blade using 11 ° is anterior horn, cutting excellent sharpness; breaking trough the use of MV type, Chip good performance; In addition, there is a ground breaking chip can further improve the accuracy of machined surface.
(9) has carbide blade materials, and various ultra-high pressure sintered coating blade, have been standardized.

2. Cutting effect

(1) to reduce vibration and to prevent deformation

with the dimple Arbor φ16mm boring bar with the original boring bar under the same conditions in the processing of L / d = 5 deep hole, the dimple effect of boring bar vibration abatement improve 21%. In addition, the dimple boring as a result of the use of the best shape of the first configuration, the axial force and radial force distribution along the cross-section reasonable, compared with the original boring bar, tool deformation decreased by 17%.

(2) breaking effects

dimple boring bar used in MV-type chip-breaker groove is groove ball chute wall and two other new combination of chip-breaker groove structure with a wide range of chip processing capabilities. Chip has been breaking the rules for small curly shape, Chip smooth, and will not scratch the surface of machined holes.

(3) processing examples

in the depth of cut 0.5mm, feed rate 0.1mm / r, cutting speed 80m/min, cutting tools extending the length of L / d = 5 under the conditions of processing SCM440 material, other companies prone to boring bar chatter, a lot of processing the surface was scratched, and the dimple boring bar can smooth processing, good surface quality. To improve such as cutting speed 160m/min, L / d = 4, others boring bar after processing in the processing of the surface will be left clear traces of ripple-like chatter, and the dimple boring bar machining surface is very smooth, accuracy can still be maintained at a very superior level.

II dimple carbide boring bar

1. Features

carbide elastic modulus for the 3 times higher than steel, therefore, the material itself has a good anti-chatter performance. Mitsubishi Materials used in cemented carbide cemented carbide than the average have higher rigidity, vibration performance is a good tool materials. Such a boring bar in the head by the steel production, stem for cemented carbide, the combination of the shape of a combination of the use of cone-shaped. In this way can improve the bonding strength between the two. Carbide boring bar as a result of good rigidity, its protruding steel boring bar length of about 1.6 ~ 2 times.

carbide boring bar dimple hole location of the structure of supply can ensure the direct flow of coolant cutting edge, a feature of great importance for deep-hole processing. For the effect of internal fluid discharged cuttings can become very smooth, with a blade by optional 80 ° diamond blade or economic application of the triangular blade. Arbor φ8 ~ 20mm in diameter has a total of five specifications, two of which brachypus (equivalent to a total length of 1 / 2, 2 / 3) and three standard length, can be selected as appropriate according to the workpiece.

2. processing effects

in cutting speed 80m/min, cutting depth 0.5mm, feed rate 0.1mm / r, extending the length of L / d = 8 under the conditions of processing SCM440 (185HB), other companies of similar boring bar machining of the workpiece surface with obvious chatter marks, and the dimple carbide boring bar machining of the surface is very smooth, with traces of a similar turning. L / d = 8 of Boring is a very difficult process, carbide boring bar as a result of dimple has a good damping effect, thus in such harsh conditions, despite the stability of high precision cutting. (07-11-15)

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